Rotary explosion-engine.



B. G. KRAMER.

ROTARY EXPLOSION ENGINE.

APPLICATION FILED nc.a.19n.

Patented Dec. 10,1918.

I Arne/var;

BENJAMIN G. KRAMER, OF ANDERSON, INDIANA.

ROTARY EXPLOSION-ENGINE.

T 0 nilwhom it 112 (13 concern:

Be it known that I, BENJAMIN G. KRA- aea, a citizen of the United States, and a resident of Anderson, county of Madison, and State. of Indiana. have invented a certain new and useful Rotary Explosion-Engine; and 1 do hereby declare that the following is'a full, clear, and exact description thereof. reference bein" had to the accompanying drawings, in whichlike letters refer t0 like parts.

This invention relates to new and useful improvements in rotary combustion engines and the prime object'of the invention is to provide a cheap, strong and durable construction and one that can be easily installed and readily operated. A further object of theinvention is the provision of a stationary drum having baflle plates against which the force ofthe explosion from the motor proper will strike to cause the motor to rotate.

A further feature of the invention is the provision of combustion chambers and timed ignition means for intermittently exploding charges of propelling medium. A further feature of the invention is the provision of means for successively charging the chambers of the motor with properly mixed explosive medium, and a further feature of the invention is the provision of valves and means for opening and closing the same at proper intervals.

The full nature of the invention will be understood from the accompanying drawings and the following description and claims:

Figure 1 is an edge elevation of the motor applied to use. Fig. 2 is a sectional view thereof as seen on line 2-2 of Fig. 1. Fig.

3 is a detail sectional view as seen on line.

standards 6, said standards also being se-' cared to the base 2. Attached to the shaft 5 are a plurality of radially disposed hollow explosion chambers 7 which terminate at their outer ends in nozzles 8, said nozzles being arranged at an obtuse angle to the Application filed December 8, 1917.

Specification of Letters ratenta t t 10, 191

Serial No. 206,162.

axial trend of the explosion chamber and substantially at right angles to the face of the bafiie plates 4, so that the force of the exploded propelling medium will strike directly upon the battle plates as it is 'discharged from thenozzles- The explosion chambers 7 terminate in a hollow hub 9, which communicates with the hollowend 10-of the shaft 5, said hollow end 10 likewise communicating with the carbureter 11, through which fuel isintroduced into the explosion chambers, the carbureter being of any preferred form used for properly'mixing air and gasolene.

In order to retain the explosive medium in the explosion chamber until such time as such medium has ignited,each explosion chamber ,is provided with an intake valve 12, the stem 13 of which projects through the wall of the hub 9 and is provided with a head 14 at its outer end for engagement with a cam 15 of a cam wheel 16, and by means of which the intake valves are successively opened to admit a charge of explosive into the chambers 7, said intake valves being closed .by means of springs 17.

Each nozzle is likewise provided with an exhaust valve 18, which is constructed simi-.

lar to the valve 12 and is closed by means of a spring 19. The valves 18 are so positioned that as soon as the explosion occurs the force thereof will open the valve and permit the ro elling medium to strike the battle plates. Cooperating with each valve stem 18 1s a lever 20 pivotally mounted upon the explosion chambers 7, and a bell crank lever 21, also pivoted to the explosion chamber 7, one arm of the bell crank lever engaging one end of the lever 20 while the opposite end thereof is provided with a roller 22 which rides upon the face of the cam wheel 23 and cooperates with the cam 21 for rocking said bell crank lever and holding the valve 18 open. The cam wheels 16 and 23 are secured stationary with the standards 6, so that the valves 12 and levers 20 and 21 will be successively operated as the explosion chambers rotate.

Each explosion chamber is provided with a spark plug 25 which cooperates with a commutator 26 carried by the cam wheel 23, through the medium of a brush 27. In operation the explosion chambers are manually rotated vuntil one of the same has been brought to firing position whereupon the spark plug in said positioned chamber is energized and the charge of explosive in the i chamber ignited.

The roller 22 then engages the cam 24 so as to operate the levers coiiperating ,with said particular exhaust chamber, thus directing the entire force of the explosion against the bafiie plates 4, such force causing all of the explosion chambers,

together with the shaft- 5 to rotate, the movement of said parts creating avacuum so as to successively charge the explosion chambers, each valve 12 being opened at the proper time by the stems 13 thereof engagans ing the cam 15. The parts employed for holding the exhaust valves 18 o enare .80 arranged that said valves will sufficient length of time to permit all of the exploded propelling mediumto leave the chamber"? and,b.y placing the required number of bafiie plates on the drum, one charge of explosive medium -will propel the parts of the motor a considerable distance and when the motor is once started it willjcontinue to rotate indefinitely so long as the proper mixture of propelling medium isintroduced thereinto. The invention claimed is:

1. The combination witha plurality of stationary tangentially arranged baflie plates,

of a shaft, a portion of which is hollow, av

plurality of explosion chambers .communi eating with the hollow portion of said shaft, valves for controlling the admission 'of theexplosive in said explosion chambers, a cam for automatically operating said valves, an

exhaust valve at the outer end of. each explosion chamber, said exhaust valve opening outwardly, away from the chamber, means to hold said last mentioned valve open a predetermined time, and means to ignite the explosivemedium'within said explosion chambers whereby the force thereof willstrike said bafiie plates and cause the explosion chambers and parts attached thereto to rotate.

2. The combination with a drum, and a plurality of tangentially arranged fixed baffle plates carried thereby, of a plurality of united explosion chambers, nozzles at the outer ends of said explosion chambers ex tending at an obtuseangle'to the axial trend of the-explosion chambers and substantially at right angles to the bafile plates and valves to automatically control thepassage of the explosive medium out of said explosion chambers, said valves extending at an angle to the trend of said explosion chambers and in line With the trend of said nozzles and opening outwardly away from the explosion chambers.

3. In a rotary combustion engine, a plurality of cylindrical ex losion chambers, a

hollow hu b integral wit the inner ends of said chambers and forming a reservoir common 'to. all of said chambers, a valve at the.

innerend of each chamber, means to operate said valves one at a time. to admit explosive medium into sa d chambers, an outwardly opening valve-"at the outer end of each chamber for normally closing the chamber, and means for. holding said outervalve open a predetermined time, I p

4. A rotary combustion engine comprising a hollow hub, a plurality of ex losion chambers carried b said hub, a va ve at the inner end of eac chamber, a cam for operating said, valves one ata time to admit fuel a into the chambers, a valve at the outer end of each chamber, a pivoted lever cooperating at one end with the stem of each valve,

a pivotally mounted bell crank lever coiip-' crating with the oppositefend of said lever,

and a'cam for operating said bell crank leaver to force the nozzle adapted to open outwardly from the explosion chamber, a stem on the valve extending at an angle to the axis of the explosion chamber and through the wall thereof, a spring adapted to normally hold the valve closed, a lever mechanism cooperating with the-valve stem-for engaging and holding the valve in open position a pre;

determined time and means to automati= cally operate said lever mechanism.

In witness whereof, I have hereunto affixed my signature.

BENJAMIN e. KRAMER. 

